Comparative study of the microstructure evolution and mechanical properties of Zn-0.1Mg-0.02Ca alloy under cold rolling and ECAP

被引：9

作者：

Chen, Yinyuan ^{[1
]}

Liu, Huan ^{[1
]}

Wu, Yuna ^{[1
]}

Yan, Kai ^{[2
]}

Ju, Jia ^{[3
]}

Teng, Hang ^{[4
]}

Song, Dan ^{[1
]}

Jiang, Jinghua ^{[1
]}

Bai, Jing ^{[5
]}

机构：

[1] Hohai Univ, Coll Mat Sci & Engn, Nanjing 210000, Peoples R China

[2] Yangzhou Univ, Coll Mech Engn, Yangzhou 225127, Peoples R China

[3] Nanjing Inst Technol, Jiangsu Key Lab Adv Struct Mat & Applicat Technol, Nanjing 211167, Peoples R China

[4] Baowu Magnesium Technol Co Ltd, Jiangsu Key Lab Light Met Alloys, Nanjing 211200, Peoples R China

[5] Southeast Univ, Inst Med Devices Suzhou, Suzhou 215163, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2024年 / 908卷

基金：

中国国家自然科学基金;

关键词：

Zn alloy; ECAP; Rolling; Microstructure evolution; Mechanical properties; MG ALLOY; DYNAMIC RECRYSTALLIZATION; CORROSION BEHAVIOR; HIGH-STRENGTH; ZINC-ALLOYS; GRAIN-SIZE; IN-VITRO; CA-ZN; TEMPERATURE; NANOMATERIALS;

D O I：

10.1016/j.msea.2024.146765

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This work aims to investigate the mechanisms responsible for changes in the microstructure and mechanical properties of a low -alloyed Zn-Mg-Ca alloy under two distinct processing techniques of equal -channel angular pressing (ECAP) and rolling. The Zn alloy was subjected to ECAP with various numbers of passes (1p, 4p, and 8p), and rolling with varying reductions (40 %, 60 %, and 80 %) at ambient temperature. The obtained results demonstrate that the Zn alloy exhibits the highest mechanical performance in terms of ultimate tensile strength (UTS) and elongation reaching 317 MPa and 34.5 % at 4p ECAP processing, while the rolled alloy shows enhanced UTS of 282 MPa and the optimum elongation of 42.2 % after 80 % reduction. Under two deformation processes, the differences in dynamic recrystallization (DRX) process are identified. During ECAP, the primary DRX mechanism is continuous dynamic recrystallization (CDRX), while in rolled alloys, the twinning -induced dynamic recrystallization (TDRX) also makes a significant contribution.

引用

页数：13

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